西南石油大学学报(自然科学版) ›› 2019, Vol. 41 ›› Issue (5): 56-66.DOI: 10.11885/j.issn.1674-5086.2018.12.10.01

• 地质勘探 • 上一篇    下一篇

齐家地区高台子油层致密化与油气充注的关系

斯尚华1,2, 任翔3, 赵玉涛4, 吴伟涛1,2, 李旭1   

  1. 1. 西安石油大学地球科学与工程学院, 陕西 西安 710065;
    2. 陕西省油气成藏地质学重点实验室, 陕西 西安 710065;
    3. 中国石油西部钻探工程技术研究院, 新疆 克拉玛依 834000;
    4. 中国石油吉林油田公司勘探开发研究院, 吉林 松原 138000
  • 收稿日期:2018-12-10 出版日期:2019-10-10 发布日期:2019-10-10
  • 通讯作者: 斯尚华,E-mail:sishanghua0724@qq.com
  • 作者简介:斯尚华,1981年生,男,汉族,湖北荆州人,讲师,博士,主要从事油气成藏地质方面的研究工作。E-mail:sishanghua0724@qq.com;任翔,1977年生,男,汉族,湖北荆州人,工程师,主要从事油气田勘探方面的研究工作。E-mail:16659978@qq.com;赵玉涛,1989年生,男,汉族,辽宁朝阳人,工程师,主要从事油气地质方面的研究工作。E-mail:552130884@qq.com;吴伟涛,1983年生,男,汉族,陕西扈邑人,讲师,博士,主要从事致密油气地质方面的研究工作。E-mail:157833571@qq.com;李旭,1995年生,男,汉族,陕西渭南人,硕士研究生,主要从事石油地质方面的研究工作。E-mail:328178443@qq.com
  • 基金资助:

    国家自然科学基金(41702132);陕西省自然科学基础研究计划(2019JM–055)

Relationship Between Densification and Hydrocarbon Filling of the Gaotaizi Oil Layer in the Qijia Area

SI Shanghua1,2, REN Xiang3, ZHAO Yutao4, WU Weitao1,2, LI Xu1   

  1. 1. School of Earth Sciences and Engineering, Xi'an Shiyou University, Xi'an, Shaanxi 710065, China;
    2. Key Laboratory of Oil and Gas Accumulation Geology of Shaanxi, Xi'an, Shaanxi 710065, China;
    3. Provincial Drilling Technology Research Institute of Western Drilling Engineering Co. Ltd., PetroChina, Karamay, Xinjiang, 834000, China;
    4. Exploration and Development Research Institute of Jilin Oilfield Company Ltd., PetroChina, Songyuan, Jilin 138000, China
  • Received:2018-12-10 Online:2019-10-10 Published:2019-10-10

摘要:

为了明确松辽盆地齐家地区高台子储层致密化与油气充注的关系,综合采用铸体薄片、扫描电镜、纳米CT、压汞实验、流体包裹体、恢复压实曲线等方法,对高台子致密储层微观特征进行了详细描述,并对致密储层成藏期进行了精细刻画,最后结合储层孔隙演化特征对该地区致密化过程与原油充注关系进行了探讨。结果表明,齐家地区高台子致密储层岩石类型以岩屑长石砂岩为主,其次为长石岩屑砂岩,储层孔隙类型主要为残余粒间孔和溶蚀孔,孔隙主要为亚微米-纳米级孔隙,孔喉连通性较好。储层致密时间在明水早期。该地区高台子油层存在两期油充注:早期原油充注发生在79~75 Ma,对应嫩江晚期;晚期原油充注发生在69~65 Ma,对应明水晚期。松辽盆地齐家地区高台子储层具有多期成藏且边成藏边致密特征。

关键词: 储层致密化, 油气充注, 成藏期, 高台子油层, 齐家地区

Abstract:

To determine the relationships between the densification and hydrocarbon filling of the Gaotaizi reservoir in the Qijia Area, Songliao Basin, this study employed various methods, such as casting thin sections, scanning electron microscopy, nanoCT, mercury intrusion experiments, fluid inclusion analysis, and the compaction-recovery curve, to examine the microscopic characteristics of the Gaotaizi tight reservoir in detail. And fine description of the formation period of the tight reservoir was made. The findings were integrated with the evolutionary characteristics of reservoir pores to discuss the relationship between the densification processes and hydrocarbon filling in the region. The results indicate that the Gaotaizi tight reservoir in the Qijia Area is dominated by lithic feldspar-bearing sandstones followed by feldspar-bearing lithic sandstones. The reservoir pores are mainly residual intergranular and dissolution pores and they are mostly submicron-nano in size, with good pore and throat connectivity. Reservoir densification occurred in the Lower Mingshui Formation. There are two phases of hydrocarbon filling in the Gaotaizi oil layer in the region. The first occurred during the period 79~75 Ma, corresponding to the formation of the Upper Nenjiang Formation. The second phase occurred during the period 69~65 Ma, when the Lower Mingshui Formation formed. The Gaotaizi reservoir in the Qijia Area, Songliao Basin has undergone multiple formation periods which were accompanied by densification.

Key words: reservoir densification, hydrocarbon filling, reservoir formation period, Gaotaizi oil layer, Qijia Area

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